Teacher: Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Paragraph- Sent 1: Obama was born on August 4, 1961, at Kapiʻolani Maternity & Gynecological Hospital in Honolulu, Hawaii.
Sent 2: He is the only President to have been born in Hawaii.
Sent 3: He was born to a white mother and a black father.
Sent 4: His mother, Ann Dunham (1942-1995), was born in Wichita, Kansas, of mostly English descent, with some German, Irish, Scottish, Swiss, and Welsh ancestry. Question: How old was Obama's mother when he was born?
Solution: 19.
Reason: Obama was born in 1961. His mother was born in 1942 and 1961-1942=19. Therefore, any of the following responses are considred correct: '19' and 'almost twenty'.

Now, solve this instance: Paragraph- Sent 1: You have seen your own reflection in a mirror.
Sent 2: The person looking back at you looks just like you.
Sent 3: Where does that reflected person appear to be standing?
Sent 4: Yes, they appear to be on the other side of the mirror.
Sent 5: That is really strange to think about, but very cool.
Sent 6: Have you ever waved at your reflection in a mirror?
Sent 7: The reflected image will wave back at you.
Sent 8: Here is something to try next time you stand in front of a mirror.
Sent 9: Wave to your reflection with your right hand.
Sent 10: What hand do you think the reflection will wave back with?
Sent 11: The same hand?
Sent 12: A different hand?
Sent 13: You will notice something interesting.
Sent 14: The reflection waves back with the hand on the same side as you, but it is their left hand.
Sent 15: The image in a reflection is reversed.
Sent 16: This is just like the image of the sign above.
Sent 17: Light rays strike flat shiny surfaces and are reflected.
Sent 18: The reflections are reversed. 
Question: How does reflection work?.
Student:
Light rays strike flat shiny surfaces and are reflected and the reflections are reversed.